Color liquid crystal display device using dichroic mirrors for focusing different colors in different directions
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United States of America Patent
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-
Nov 3, 1992
Grant Date -
N/A
app pub date -
Jun 28, 1991
filing date -
Jun 28, 1990
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A color liquid crystal display device is provided with a light protection system for rendering a plurality of beams in mutually different wavelength ranges incident upon a common liquid crystal display element from mutually different directions. The liquid crystal display element includes a liquid crystal driving device for light modulating the respective beams transmitting therethrough at mutually different angles. Further, on the surface of the liquid crystal display element upon which the beams are incident, an optical system is provided for focusing the respective beams of different wavelength ranges from different angles and for converging light beams of similar wavelength ranges for transmission through the liquid crystal display element so that combined color images can be subsequently formed on a display screen. Moreover, with the use of a micro-lens array, when transmitting through the micro-lens array in accordance with angles of incidence, the beams incident upon the liquid crystal display element are distributively projected upon liquid crystal portions to which corresponding color signals are applied.
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